Microsoft Azure uses 140 prefixes for WindowsAdminCenter.
Short answer
Microsoft Azure lists these prefixes under “WindowsAdminCenter”. Microsoft publishes Azure’s ranges weekly as Service Tags: named groups such as AzureCloud, Storage, Sql or AzureFrontDoor.Frontend, each a list of prefixes. We import the global (non-regional) tags.
Prefixes
What changed
No prefixes added or removed since we started tracking this list. Changes appear here the day after the provider publishes them.
Allowlist formats
nginx (first 5 prefixes)
allow 102.133.220.200/29; allow 102.133.60.40/29; allow 104.46.178.8/29; allow 13.73.255.240/29; allow 134.138.68.144/29; deny all;
iptables (first 5 prefixes)
iptables -A INPUT -s 102.133.220.200/29 -j ACCEPT iptables -A INPUT -s 102.133.60.40/29 -j ACCEPT iptables -A INPUT -s 104.46.178.8/29 -j ACCEPT iptables -A INPUT -s 13.73.255.240/29 -j ACCEPT iptables -A INPUT -s 134.138.68.144/29 -j ACCEPT
Generate the full list from the CSV, and refresh it on a schedule: providers add and retire prefixes often.
Sources
- Microsoft Azure: published IP ranges · checked 5 Nov 2026
- Microsoft Azure documentation